INDEX to AMERICAN BOTANICAL LITERATURE 529 
Rolfe, R. A. Spiranthes gracilis. Orch, Rev. 15: 313-315. 7. rie 
1907. 
With notes on some other North American orchids. 
Rusby, H. H. Some little-known edible native fruits of the United 
States. Jour. N. Y. Bot. Gard. 8: 175, 177-188. Au 1907. 
Ruthven, A. G. A collection of reptiles and amphibians from south- 
ern New Mexico and Arizona. Bull. Am. Mus. Nat. Hist. 23: 483- 
: 603. f 7-22. 20 Au 1907. 
Contains notes on the flora and illustrations of vegetation. 
Rydberg, P. A. Studies on the Rocky Mountain flora—XVIII. Bull. 
Torrey Club 34: 417-437. 100 1907. 
_ Includes new species in Homalobus (5), Déholcos, Kentrophyta, Aragallus (3), 
Hedysarum, Lathyrus, Capnoides (2), Lepidium (3), Thelypodium (2), Pleuro- 
Phragma, Sophia (2), and dradis: and the new genera Thelypodiopsis, Pleuro- 
bhragma, Hesperidanthus, Stanleyella, Heterothrix, and Chlorocrambe. 
Schelle, E, Pterocactus Kuntzei K. Schum. Monats. Kakteenk.17: 
137, 138. 15 S 1907. : 
Native of Argentina. 
Schulz, 0. E. Lrythroxylaceae. Das Pflanzenreich 4: 1-176. f. I- 
32. 13 Au Ig07. 
Scott, D.H. The flowering plants of the Mesozoic age, in the light 
of recent discoveries, Jour. Roy. Micr. Soc. 1907: 129-141. fi. 
6-9. 14 Ap 1907. 
Scotti, L. Contribuzioni alla biologia fiorale delle ‘ Myrtiflorae.”” 
. Ann. di Bot. 6: 25-108. 20 Au 1907. 
Setchell, W. A. Some unreported Alaskan Sfhagna, together with a 
summary of the cryptogamic work of the University of California 
botanical expedition to Alaska‘in 1899. Univ. Calif. Publ. Bot. 2: 
899-315. 27 S 1907. 
Shear, C, L, Cranberry diseases. U.S, Dept. Agric. Bur. Pl. Ind. 
Bull. 110: 1-64. p/. 7-7. 100 1907. 
Sheldon, J.-L. Species of Hepaticae known to occur in West Virginia. 
Bryologist TO: 80-84. 3S 1907. 
Sheldon, J.L. A study of the leaf-tip blight of Dracaena fragrans. 
Jour. Myc. 13: 138-140. 25 Jl 1907. 
P, hysalospora Dracaenae sp, nov. 
mith, E.F. The parasitism of Veocosmospora — inference versus fact. 
Science II. 26: 347-349. 13 S 1907. : 
mith, R. E. Report of the plant pathologist to July 1, 1906. Calif. 
Agric, Exp. Sta. Bull. 184: 219-258. 7. 7-12. Ja 1907. 
